Boiling Water for Removing Fruit Stains

My aunt taught me how to make strawberry preserves and I got some on my T-shirt I was wearing. I thought my shirt was forever stained by the juice of the strawberries. She showed me that when you take your shirt and stretch it over a bowl inside out and pour boiling water on the stain, it disappears! It was like magic. No scrubbing or cleaners were used, just plain boiled water. Easy peasy!